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1.
Autoantibodies against β1‐Adrenergic Receptors: Response to Cardiac Resynchronization Therapy and Renal Function
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ANTONIO MICHELUCCI M.D. MARIO MILCO D'ELIOS M.D. ELENA STICCHI Ph.D. PAOLO PIERAGNOLI M.D. GIUSEPPE RICCIARDI M.D. CINZIA FATINI Ph.D. MARISA BENAGIANO Ph.D. ELENA NICCOLAI Ph.D. ALESSIA GRASSI M.Sc. PAOLA ATTANÀ M.D. MARTINA NESTI M.D. GINO GRIFONI M.D. LUIGI PADELETTI M.D. ROSANNA ABBATE M.D. DOMENICO PRISCO M.D. 《Pacing and clinical electrophysiology : PACE》2016,39(1):65-72
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ANDREU M. CLIMENT M.Sc. MARIA S. GUILLEM Ph.D. DANIELA HUSSER M.D. FRANCISCO CASTELLS Ph.D. JOSÉ MILLET Ph.D. ANDREAS BOLLMANN M.D. 《Pacing and clinical electrophysiology : PACE》2010,33(12):1510-1517
Background: During atrial fibrillation (AF), RR interval histograms show different populations of predominant RR (pRR) intervals. These pRR intervals have been suggested to be multiples of the refractory period of the atrioventricular (AV) node or caused by the existence of a dual AV node physiology. In this study, the hypothesis that pRR intervals are related to the dominant atrial fibrillatory rate is tested. Methods: In this study, Holter electrocardiogram signals from 55 patients with persistent AF were analyzed. Number and position of pRR intervals were detected and compared with mean and standard deviation of the dominant atrial cycle length (DACL). In addition, effects of an enhancement of vagal activity and rate‐control treatments (β‐blockers and verapamil) were evaluated. Results: In all patients with more than one pRR interval and in 47% with one pRR interval, RR interval populations were statistically related with multiples of the DACL. During night activities and during β‐blockers treatment, mean ventricular rate was decreased (P < 0.01). This change was associated with a variation in the percentage of occurrences of each pRR (P < 0.01), whereas no statistical differences were present in the mean DACL or in the position of pRR intervals. A variation of the DACL due to verapamil was associated with a consistent modification in the position of the pRR intervals. Conclusion: The relation between pRR and multiples of the DACL during AF suggests that more probable RR intervals are caused by different conduction ratios of the atrial rate. (PACE 2010; 33:1510–1517) 相似文献
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JEDRZEJ KOSIUK M.D. YVES VAN BELLE M.D. KERSTIN BODE M.D. JELENA KORNEJ M.D. ARASH ARYA M.D. SASCHA ROLF M.D. DANIELA HUSSER M.D. GERHARD HINDRICKS M.D. ANDREAS BOLLMANN M.D. Ph.D. 《Journal of cardiovascular electrophysiology》2012,23(10):1073-1077
Left Ventricular Diastolic Dysfunction in Atrial Fibrillation Background: Left ventricular diastolic dysfunction (LVDD) is common in the general population, but its prevalence in atrial fibrillation (AF), predictors for LVDD in AF and the association between LVDD and AF‐related symptom severity has not been well studied. Methods: In 124 consecutive patients (mean age 61 ± 11years, 60% male) with paroxysmal (n = 70) or persistent AF (n = 54) referred for AF catheter ablation, LVDD was evaluated according to current guidelines using transthoracic echocardiography. AF‐related symptom severity was quantified using the European Heart Rhythm Association score. Results: LVDD was present in 46 patients (37%). In uni‐ and multivariable regression analysis, age (OR 1.068 per year, 95% CI 1.023–1.115, P = 0.003) and persistent AF (OR 2.427 vs. paroxysmal AF, 95% CI 1.112–5.3, P = 0.026) were associated with LVDD. LVDD was found in 11% with mild AF symptoms (n = 27) as opposed to 44% in patients with moderate–severe AF symptoms (n = 97, P = 0.002). Thus, the OR for moderate–severe AF symptoms was 6.368 (1.797–22.568, P = 0.004) in the presence of LVDD. Conclusions: LVDD (1) occurs frequently in AF, (2) is associated with advancing age and AF progression and (3) is correlated with symptom severity in AF. (J Cardiovasc Electrophysiol, Vol. 23 pp. 1073‐1077, October 2012) 相似文献
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GIANFRANCO BUJA ANTONIO F. FOLINO MARINA BITTANTE BRUNO CANClANI BORTOLO MARTINI MANUELA MIORELLI DANIELA TOGNIN DOMENICO CORRADO REA NAVA 《Pacing and clinical electrophysiology : PACE》1989,12(3):406-412
We describe three athletes who had syncope after (case 1) or during (cases 2, 3) hyperventilation. During the episode, ECG showed prolonged sinus arrest. Clinical data and noninvasive investigations were normal and the phenomenon was not reproducible. Electrophysiological study after autonomic blockade allowed a prolonged intrinsic heart rate in case 1, and abnormal corrected sinus node recovery time in cases 1 and 2. During follow-up, symptomatic sinus arrest provoked by deep inspiration occurred in case 3. These cases document prolonged asystole of unknown etiology, secondary to hyperventilation, and probably caused by different vagally-mediated mechanisms. 相似文献
7.
The steroidogenic interrenal cells in the adrenal homologue of the male stickleback ( Gasterosteus aculeatus ) were studied in relation to the reproductive cycle by means of histological and ultrastructural observations, and using histochemical methods for the localisation of 3β-hydroxysteroid dehydrogenase (3βHSD) and 17β-hydroxysteroid dehydrogenase (17βHSD). To determine the various stages of the reproductive cycle, the testes were also examined by histological and histochemical methods (3βHSD). The results indicate that in this teleost the interrenal cells can undergo a cycle in which phases characterised by different cytological aspects are observed. During this cycle there is a renewal of organelles, in particular mitochondria and SER. Periodic degenerative processes are also found. Organelle cytology showed that the cell cycle has at least 3 different aspects during the year. An analogy with some cytological aspects of the adrenal zonation in mammals is possible. It is postulated that the interrenal gland activity could substitute or supplement androgen production by the testes. 相似文献
8.
GIOVANNI BATTISTA CANDIANI LUIGI FEDELE FABLO PARAZZINI DANIELA ZAMBERLETTI 《BJOG : an international journal of obstetrics and gynaecology》1990,97(7):613-617
Summary. Reproductive prognosis after abdominal metroplasty was assessed in 73 women with a septate and 71 with a bicornuate uterus who underwent metroplasty at the First Obstetric and Gynecologic Clinic of the University of Milan between 1972 and 1985. The overall cumulative 5-year delivery rates were respectively 70% and 73% in women with septate and bicornuate uterus, rising constantly with time. The number of previous miscarriages did not affect the reproductive prognosis: the 5-year probability of giving birth was 64% and 75% in the women with septate uterus and respectively fewer than two or two or more previous miscarriages, and the corresponding values were 66% and 73% in the bicornuate uterus subgroup. The miscarriage rate (about 20%) was similar with both types of malformation. 相似文献
9.
DANILO RICCIARDI M.D. CARLO DE ASMUNDIS M.D. Ph.D. JENS CZAPLA M.D. MARK LA MEIR M.D. PEDRO BRUGADA M.D. Ph.D. FRANCIS WELLENS M.D. Ph.D. 《Pacing and clinical electrophysiology : PACE》2013,36(2):e56-e58
A 71‐year‐old woman with severe nonischemic dilated cardiomyopathy and low ejection fraction with severe mitral regurgitation and tricuspid regurgitation and pulmonary hypertension underwent multiple valve repairs and cardiac resynchronization therapy implantation with epicardial shock leads. (PACE 2013; 36:e56–e58) 相似文献